Well, that was one example. In general though, for over .3 deposits to be used at the sportsbook, which rule applies: The T&C rule or the FAQ rule
They state different things.
If you want to be 100% certain you can also try to contact the FJ team over discord. There is support chat and the admins will be able to help you there.
Hello, I was wondering if I could talk to somebody on the support staff of Fortune Jack about a withdraw processing issue. I haven't been able to receive any information from support. Thanks
Same as for the user above, you can try and contact them on discord. The link to it is available on the official FJ site.